Centrifugal extractor



EAGQMZ June 26, 1923.

W. H. ROUSTON CENTRIFUGAL EXTRACTOH Filed NOV. 26 1920 I I N V EN TOR. fiiZMQ/f 705 A TT ORNE Y.

Patented June 26, 1923.

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WILLIAM H.

ROUS'IQN, or nn'rnorr, MICHIGAN; car-ion nunvnn nousron. Aim nrsrnllrnix or SAID WILLIAMHROUSTO1\T,DECEASED.

-- CENTRIFUGAL EXTRACTOR.

Application filed November 26, 1920. Serial No. 426,664.

To all whomt't may concern Be it known that 1, WILLIAM H. RoUs'roN, citizen of the United States, residing at Detroit, county of Wayne, State of Michi an,

have invented a certain new and usefulv mprovement in Centrifugal Extractors, and declare the following to be a full, clear, and exact description of the same,.such as Wlll enable others skilled-in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to improvements in extractors of the centrifugal type. The object is to provide an extractor of such type so mounted and coupled with its driving shaft that, .lirrespective of the carried load, whether the load be so arranged as to balance or not, the rotating basket will rotate smoothly and evenly, without wobbling motion or excessive vibration. I

In the drawings,-

Figure 1 is an. end elevation showing the extractor attached to the end of a washing machine.

Fig. 2 is a fragmentary sectional view of the extractor.

Fig. 3 is a section taken on the dotted section line in Fig. 2. i

Let (1. indicate a washing machineof any conventional type to the end of which is attached a power-driven extractor of the centrifugal type.

b is the motor for driving the extractor; c is a shaft extending from the motor to a driving pulley (Z. A drive belt 6 passes over this pulley (Z and over a pair of pulleys f. but one of which is shown in Fig. l, and around a flywheel f/ positioned below the extractor and mounted on a shaft h, which shaft extends upwardly through the bottom of the vat of the extractor, such vat being indicated as 2', and provided with an eduction pipe 70, as shown in Fig. 1. This shaft h is suitably mounted in ball thrust bearings m. n is the supporting shelf which extends from the end of the washer and supports the extractor vat. Fixed to the upper end of the drive shaft in is a cylindrical cup-shaped clutch member 0.

The rotatably driven basket provided with perforated side wall is indicated as p and the bottom of the basket is axially recessed as at p Disposed within this axial recess, somewhat elevated above the bottom of the vided with an axial teat-like projection 9 This rounded supporting pivot is of greater diameter than the diameter of the cylindrical cup-shaped clutch member 0 and is adapted to bereceived and supported by such cup-shaped clutch and to fric-tionally engage the same so that the basket will be driven thereby. The teat-like projection g is adapted to be received within an axial recess 8 formed in a stub shaft 5 carried in.-

teriorly of the cup-shaped clutch member-0.

The extractor is so constructed that when the basket is empty it will be supported and balanced, as shown in Fig. 2, the rounded pivot g resting within the cup-shaped clutch 0. If, however, the basket is loaded unevenly so as to tilt downwardly on one side this downward tilting movement will be restrained after a certain limited movement by the action of the teat g in the recess 8 In the operation of the device, by virtue of the coupled connection made between the basket and the driving shaft, even though due to an uneven load the center of gravity of the basket does not coincide with the extension of the axis of the driving shaft,

the basket will rotate without wobble and Without exerting such a torque as to cause of rotation of the basket may yet remain perpendicular. If the basket were rigidly secured. to the driving shaft and carried an unbalanced load the same result would be produced as in the rotation of an unbalanced flywheel; there would be resulting wobble and oscillation and the machine would move around over the floor upon which it rested.

What I claim is:

In an extractor of the centrifugal type, the combination with a vat, of a drive-shaft extending upwardly through the bottom of the vat, a clutch member in the form of a cup-shaped hub carried at theupper end of said drive shaft, the bottom of said hub provided with an axial depression. a rotatable basket positioned within said vat and having bottom bent upwardly axially to form a concavity, a clutch plate secured to the bottom of the basket and extending upwardly interior the concavity and provided with a downwardly projecting axial teat-like member received within the depression in the bottom of the hub to limit the wabble of the basket during rotation.

In testimony whereof, I sign this specification.

WILLIAM I-I. HOUSTON. 

